If this is your first visit, be sure to
check out the FAQ. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.

No LFE on streaming TV's

03-07-2018, 11:21 AM

I just bought a new 4K Roku tv and the picture is great but if I am streaming from the tv the only way I can get sound to my AV amp is to use the optical digital cable from the tv to the amp . That gives me Dolby digital sound but without the .1 or low frequency content .nothing comes through my sub and the sub amp goes on stand by after 15 minutes . Has anybody had this happen to them or is my tv got something wrong with it .

Comment

neither my tv or amp has arc . If I stream the same movie off Netflix from my blue ray player I get the lfe content . The amp is capable of lfe from the optical input off of other things so it must be the tv .I also have a streaming box like Roku that does the same thing ( no LFE ) and that uses an HDMI to the amp .

Comment

Dig through your settings on the TV, perhaps you're missing an audio setting somewhere that specifies the type of output. Does your receiver indicate when it gets a multichannel signal? My old Sony had a blue light that would only activate when multi channel digital was coming in, but my newer Yamaha does not. I have to put that one in "straight" mode to confirm it's getting digital surround.

Comment

I'm shocked it doesn't support ARC, I thought all the TCL and Insignia Roku 4K sets did(though I don't know what brand you're using). If your TV is set to PCM audio and using an optical cable it will only output stereo audio. It will need to be set to Dolby Digital or DTS if those options are available for you to get a 5.1/7.1 signal. It's a limitation of the S/PDIF output.

Comment

It's got to be a bad tv . I plugged the blue ray player into the amp via the optical cable and the LEF was there .The tv has no options in its menu for the optical out , only for the speakers that are built in .

Comment

I checked my TV, my output is set to DTS. It also has the option for PCM, when I switched to that it cut back the LF output significantly. I've never heard of the Roku brand, looked it up, a 55 inch 4k Smart TV for $369? Can't say I'm surprised. You should spend the extra for a Samsung.

Comment

I finally got it working . I had to reassign the optical input to the CD input instead of the game input . I don't know why the game input does not handle LFE content ,most games use a lot of LFE content .Go figure .Thanks to everybody for there help .